If industries require stainless steel that is able to endure extremely corrosive environments, Stainless Steel 904L plates are usually considered to be an excellent material selection. Also known by the numbers UNS N08904 and EN 1.4539, 904L is a low-carbon austenitic stainless steel with a high-alloy alloy that contains significant amounts of nickel, chromium, molybdenum, as well as copper. This gives it a high resistance to pitting, acids, crevice corrosion, and stress-corrosion cracking.
In this guide, we at Nickelalloyplatehub | Leading Stainless Steel 904L Plates Manufacturer in India offer you everything you need to know about Stainless Steel 904L Plates.
What are Stainless Steel 904L Plates?
Stainless Steel 904L Plates are flat-rolled steel plates that are made of a super-austenitic stainless alloy specifically designed for harsh environments. Its molybdenum and nickel content offers significantly greater corrosion resistance than standard grades like 304, and its copper content enhances resistance to acids, especially sulfuric acid.
The lower carbon content lowers the risk of sensitization when welding. 904L is usually non-magnetic when in its full austenitic state and provides good strength as well as formability and weldability.
Types of Stainless Steel 904L Plates:
Based on production process, finishing, and application, the types of Stainless Steel 904L Plates comprise:
- Hot Rolled 904L Plates
- Cold Rolled 904L Plates
- Annealed 904L Plates
- Pickled and Passivated 904L Plates
- Polished 904L Plates
- Heavy 904L Plates
- Custom-cut 904L Plates
- ASTM B625/ ASME the SB625 plates as well as flat products
The best type of material is determined by the thickness, surface finish, fabrication method, dimension specifications, and the environment of service.
Stainless Steel 904L Plates: Mechanical, Chemical, Physical and Specifications Table:
The typical properties and composition can be different based on the material standard. The following numbers are representative of the commonly used 904L plate materials.
| Category | Property | Typical / Specified Value |
| Chemical | Chromium | 19-23% |
| Nickel | 23-28% | |
| Molybdenum | 4-5% | |
| Copper | 1-2% | |
| Carbon | <=0.020% | |
| Manganese | <=2.00% | |
| Silicon | <=1.00% | |
| Mechanical | Tensile Strength | >=490 MPa |
| 0.2% Yield Strength | >=220 MPa | |
| Elongation | >=35% | |
| Hardness | Typically <=150 HB | |
| Physical | Density | Approx. 7.95 g/cm3 |
| Elastic Modulus | Approx. 190 GPa | |
| Thermal Conductivity | Approx. 11.5 W/m*K | |
| Thermal Expansion | Approx. 15 um/m/degC | |
| Magnetic Character | Generally non-magnetic | |
| Specifications | UNS | N08904 |
| EN | 1.4539 | |
| ASTM/ASME | B625/SB625 are commonly employed for sheet, plate and strip | |
| Product Forms | Sheet, plate and strip |
Always confirm the authenticity of the certification and the applicable ASTM/ASME specification prior to purchasing because the requirements may vary based on the product’s form and the applicable standard.
Benefits of Stainless Steel 904L Plates:
The primary benefit of stainless steel 904L results from its high-alloy content.
Excellent corrosion resistance: 904L excels in extreme chemical environments. It also has excellent resistance to crevice and pitting corrosion.
Resistant to acids: Its molybdenum and copper components make it effective in conditions with sulfuric or phosphoric acid.
Excellent weldability: The low carbon content helps minimize sensitization-related problems during welding.
Good shapeability: Despite its high alloy content, 904L is able to be manufactured using industrial techniques.
Longer service life: Resistance to corrosion could reduce the need to replace equipment and prolong the service life of equipment.
Low magnetic permeability: The fully austenitic structure provides the alloy with generally lower magnetic permeability.
How Does Stainless Steel 904L Plates Compare to Other Grades of Stainless Steel?
904L isn’t necessarily the best option for every situation. It is picked for its corrosion resistance, which is worth the cost of its higher price.
| Grade | Corrosion Resistance | Acid Resistance | Relative Cost | Typical Applications |
| 304 | Good | Moderate | Low | Architecture, food general fabrication |
| 316L | Very Good | Better than Better than | Medium | Chemical, pharmaceutical and marine |
| 904L | Excellent | Excellent | High | Chemical processing and acid handling and pollution control |
| 2205 Duplex | Excellent | Very Good | Medium-High | Chemical, oil & Gas Marine |
| 6Mo / Super Austenitic | Extremely High | Excellent | Very High | Chemical environments and severe chloride |
In some instances, Duplex 2205 may be an alternative that is more cost-effective, and 904L can be appealing when specific acid-corrosion resistance and manufacturing characteristics are crucial.
Advantages and Disadvantages of Stainless Steel 904L Plates
Advantages
- Highly resistant to all forms of corrosion
- Strong resistance to crevice and pitting corrosion
- Excellent resistance to various acidic environments. Excellent resistance to several acidic
- Good weldability
- Good formability and toughness
- Low carbon content
- Suitable for demanding chemical-processing environments
- Long potential service life
Disadvantages
- More expensive than the common grades like 304 and 316L.
- The high nickel and molybdenum content raises the cost of materials
- Machining requires suitable tools and the right parameters
- Not required in applications where stainless steel is the only material that provides sufficient resistance to corrosion
- The availability of certain dimensions and finishes could be limited compared to the standard grades
Applications of Stainless Steel 904L Plates
Due to their corrosion resistance, Stainless Steel 904L Plates applications encompass a range of demanding industries which include:
- Chemical processing equipment
- Equipment for manufacturing pharmaceuticals
- Systems for the processing of sulfuric acid
- Heat exchangers
- Equipment for controlling pollution
- Equipment for Petrochemicals
- Paper and pulp processing
- Treatment of wastewater and water
- Components of the marine and offshore
- Storage tanks and vessels for processing
- Scrubber systems
- Food processing equipment in which it is necessary to have a high level of corrosion resistance
Its mix of toughness, resistance to corrosion, and weldability makes the alloy useful in situations where stainless steel can suffer from the effects of premature corrosion.
Maintenance of Stainless Steel 904L Plates
While 904L is not in need of much care, periodic cleaning can help keep its condition in good shape. Get rid of dirt, dust, and chemical residues by using non-contaminating methods of cleaning. Avoid using carbon-steel tools or brushes that could introduce iron contamination on the surface of stainless steel.
After exposure to chemicals that are aggressive Examine the plates and components for deposits, discoloration, pitting, or localized corrosion. The areas that are welded should be treated with post-fabrication treatment and cleaning, if required by the process.
Proper storage is essential as well. Make sure that plates are dry, clean, and protected from contamination prior to fabrication or installation.
Cost of Stainless Steel 904L Plates
The Stainless steel 904l plates price in India depends on the thickness dimensions, quantities, and surface finish, production standard origin, certification, market conditions, and the cost of freight.
For those looking for 904L stainless steel plates in India, it is crucial to obtain a quote that is current instead of making a decision based on an online quote that has a set price. The listings of suppliers on the internet show different prices, which indicates that prices can fluctuate depending on the grade of certification, the origin, size, and the market conditions.
Molybdenum and nickel are major cost drivers, which is why 904L typically costs significantly more than the standard stainless grades. However, its extended service life and resistance to corrosion make it an economically viable choice for high-end applications.
Choosing a Stainless Steel 904L Plates Manufacturer and Supplier
Picking a reputable top Stainless Steel 904L Plates Manufacturer in India or Stainless Steel 904L Plates Supplier in India is essential to industrial projects. Buyers should verify the material’s test certificates, standards, dimensions of the surface, finish, and heat treatment conditions, as well as traceability and inspection requirements.
For companies that require 904L plates, Nickelalloyplatehub can frame its offerings around quality technical specifications, customized dimensions, documents, and dependable supply for industrial applications that require a high level of precision.
Stainless Steel 904L Plates combine superior anti-corrosion, resistance to acid weldability and toughness in an austenitic, premium steel. Although the initial cost is higher than other grades like 304 and 316L, they provide substantial value in industrial and chemical environments in which corrosion resistance is a major concern.
In applications involving chemicals, acids, heat exchangers, pollution control systems, and other environments with corrosive elements, 904L could be a solid choice when it is specified and purchased according to the requirements of the standard.
1. What are Stainless Steel 904L Plates used to do?
Stainless Steel 904L Plates are utilized in acid-handling, chemical processing machines, heat exchangers, pollution control systems as well as storage vessels, pharmaceutical equipment, and other areas that require strong resistance to corrosion.
2. Does 904L have more value than stainless steel 316L?
904L has a higher resistance to numerous acidic and aggressive chemical environments than 316L. However, it’s also more expensive. The right grade is determined by the specific conditions of operation.
3. What is the norm in Stainless Steel 904L Plates?
904L is referred to as UNS N08904 as well as EN 1.4539. ASTM B625/ASME SB625 are usually used to describe 904L plates, sheets, strips, and plate products, but the exact specification is to be verified according to the project and product specifications.
4. What factors influence Stainless 904L steel plates’ price in India?
The thickness, dimensions of the plate dimensions, quantity, surface finish, certification of origin, molybdenum and nickel costs, requirements for manufacturing taxes, and transportation costs can all influence the final cost.
5. Where can I buy Stainless Steel 904L Plates in India?
Industrial buyers need to find an experienced Stainless 904L Steel Plates supplier in India who can supply the necessary dimensions, material test certificates, applicable standards traceability, and inspection documents. Nickelalloyplatehub could be an alternative source for 904L plates.